Belt-shifter



' 1. E. STAGLf BELT SHIFTER.

APPLICATION FILED MAR. a. 1920.

I 1,362,967. Patented Dec. 21,1920.

JOSEPH is. sweet, on neonates, new roan.

. BELT-SHIFTEIRJ.

rest and back to the power pulley, and has for its object to safe uard the operator of a machine from accidents and the elimination of the idler pulle commonly used for this purpose and to a lord means by which such shifting may be readily and easily accomplished. r 1

These objects are attained by the mechanism illustrated in the accompanying drawings in which-- Figure 1 is a side view of the invention Fig. 2 is a front elevation partly in section Fig. 3 is'a detail view of the means for shifting the belt from the belt rest to the pulley, and r Fig. el. is a plan View of the detail shown in Fig. 3.

The belt rest comprises a segment bracket 1 and 2 attached to the ceiling and is mounted adjacent-the driving pulley and concentrically with the pulley shaft. the outer edge of the segment ha ring: a radius slightly longer than the radius oi the pulley. The segment is substantially coextensive with that part of the pulley in contact .with the belt 4.

5 designates a series of pins screwed into the face of the segment at intervals along and inwardly from its outer edge and projecting toward and close to the edge of the pulley 3 and each pin 5 with three ext-01% tions has on .its free end a radial flange or bent up portion 6 projecting outwardly from the axial center of the segment. (in the pins 5" nearest the upper end of the segment bracket 1 the bent up portion is omitted. on each of the pins 5 and 5 rollers 7 are mounted which are held in place by the bent up portions 6 which project somewhat beyond the surface of the rollers. The roller on the pins 5 are held in placeby a head on the pins which heads are slightly smaller in diameter than the roller.

This series of pins 5 and 5" thus forms a supepeoifieationof Letters Patent.

Patented 231 1920. Serialllo. seeaav.

port or rest for the belt when si fted 3F the pulley, the rollers? i'aei itat-ing xi nnneznent olthe belt to and from the or support.

For shifting thebelt from the pulley to the belt rest or pins?) and 5" a rod is mount ed for reciprocation in bracketst said rod. 8 extending across the face of the pnllev and belt rest and having rigidly attached a depending pin 10 for contacting with. the edge of the belt and pushing it from, the pulley to the pins 5 and 5". A coil spring 11 mounted on the rod 8 inside of the bracket 9 and the pin 10 tends to hold the rod 8 in inactive position. The rod 8 can be reciprocate-d by a handle 29 having itsup'per and attached to the segment hraeltet 1 and lacing connected at a point intermediate its ends to an arm 13 rigidly connected to the rod For pins 5, an arcnate plate 1% mounted the upper portion of thesegrment brat l and parallel therewith. The plate 14: is the same width and eurtnre as the segment and of a length to ion we tour or more of the roller bearing pins 5. which pins project loosely plate.

Each end of the plate lei has an enlarged hole to pass headed pins iliwhich are rigidly attached to segment bracket 1 and has mounted thereon a coil spring" it? between the plate/ll and the head. of the pin, these spring-s tending to hold the plate l i against the segment bracket 1. The middle portion of the plate 14 has rigidly attached thereto a pin l? whieh projects freely through hole in the sea .ient bracket 1 for the n r pose of shitting; the plate toward and :tron'i the segment bracket i. It will thus be that the plate 11 resting normally agai the segment bracket l. with its outer edge coinciding" with the outer edge of the sap;- ment and the pins'fi being located, as stated, inwardly from this edg'eQthe engage the edge of the belt when. thedatter is resting on the pins 5 5"- and push the b it from the pins or rest.

For operating this shifting ilate 141- a. hell crank lever 18 is mounted on a stud that one end of the bell crank lever projecting downwardly will engaegethe end of the "lifting the belt from the rest f through enlarged holes in the plate H may pin' 17; The outwardly projecting end of the bell crank lever 18 has attached a pull rod 20 for operating the plate 1 1.

The 0 eration of the invention is as fol-' lows: hen it is desired to shift the belt from the pulley to 5, the handle 12 is-manipulated and the belt is pushed from the pulley to the rest by contact of the pin 10 with the edge of the belt, the absence of a bent up portion 6 (in the Pint" making such Shifting efisier and the rollers 7 permitting running movement of the belt without undue friction. Whenit is desired to shift the belt from the pins 5 5 to the pulley the-operator will pull down on the pull rod 20, which by the engagement of the bell crank lever 18 with the pin 17 will push' the plate 14: toward the ends of the pins 5 and the pulley and with it the belt which is thus transferred to the pulley. The springs 16-will return the plate 14 to normal position upon release ofthe a rod 20.

I claim-" 1 In a safety belt shifting device the the belt rest or pins 5,

portions and an arcuate plate combination'of a segment bracket or sup port, a circular series of pins rigidly mounted on said support, rollers mounted on said pins and a shifting device mounted on said support, said shifting device comprising an arcuate plate parallel with said support and ofor the equivalent pins having a bent up I portion on their ends, rollers mounted on said pins and held thereon by said bent up mounted on said support and embracing certain of said rollerbearing pins, and means for shifting said plate toward and from said support whereby the belt may be shifted from the support to a pulley.

Signed at Brooklyn, in the county of Kings and State of New York this (3th day Q of March, A. D. 1920. JOSEPH E. STAG 

